Strange Connection Problem

[herme3]

I am having trouble accessing certain web sites, including ScienceForums.net and my own dedicated server. This has happened before, and it can sometimes take several days before I can access them again.

 

When I ping ScienceForums or my server, all pings are returned from the correct IP addresses. However, I am not able to load anything from them in a web browser. I've tried using Internet Explorer and Firefox with Windows Vista, and I've tried Firefox with Linux on my other computer. None of them will load anything unless I use a proxy server site, which I am using now.

 

I contacted my ISP, and they said their DNS servers are working. They said it isn't their problem because I can access other sites. I contacted my server host, and they said everything is working fine on their end. I just don't understand why I can ping these sites, but I can't load any web pages.

[Cap'n Refsmmat]

What sort of errors do you get?

[herme3]

I waited for about 20 minutes, but I never saw an error page. The indicator showed that the site was loading, and the Firefox status bar said "Waiting for scienceforums.net..." but nothing ever came up. The title "Science Forums, The Original" at the top of the window won't even load.

 

I tried restarting the computers and the cable modem, but it never makes a difference. The sites normally just start working again several days later.

[Cap'n Refsmmat]

Normally, FF would timeout and give up...

 

Blank white page?

[herme3]

Now, all of the sites are working again. I checked the traffic stats for my site, and the traffic did not drop during the time I was unable to access it. Therefore, I think this is a problem isolated to my ISP. I just don't understand why I was able to ping those sites from a command prompt.

 

Normally' date=' FF would timeout and give up...

 

Blank white page?[/quote']

 

Yes, it was a blank white page. The indicator at the top showed that it was trying to load a page, but nothing ever loaded. This happened with the Firefox in Windows and Linux.

[Comandante]

Maybe some of these questions would hint at things; You tried this with latest versions of firefox? Is everything ok with cookies? Do you have software firewall and are its options set out properly? Is your router's firewall set out correctly, perhaps you or someone else blocked an ip range accidentally?

 

I mean, if you get same thing from two different computers on the same network, and you're sure these computers aren't clones of each other (disk images), then it's obviously something up with router or ISP, as far as I can see... It's likely there is an ip range blocked at some point, might pay to check, but if it's not then try this; connect one of the PC's to the internet directly through the modem and see what happens. Did you try resetting the router, or your server, through wherever the internet is coming?

 

If none of that works out then it's probably ISP. Try asking someone on the same ISP to access the sites at the times you can't.